RAR archive marked as original, carrying the identifier V.MS56M and the code 25V40066; the 25V prefix hints at a 25-series SPI flash part, but the name does not confirm the chip or the device. At 149 KB it is consistent with a small original firmware read rather than a document. Unpack it with WinRAR or 7-Zip and verify the image size against the capacity of the target flash before programming. Match the board marking with V.MS56M and keep a backup of the existing chip contents before writing anything with a programmer.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biositechyangiyer. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.